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Foam pad performance is more technical than color or firmness. PPI, open-cell structure, and closed-cell construction all influence how a pad cuts, finishes, manages heat, and controls polish residue. Lower PPI foams typically create more bite for heavier correction, while higher PPI foams deliver smoother refinement and gloss. Open-cell pads breathe better and manage residue during longer correction cycles, while closed-cell pads keep more product active on the surface for a more direct polishing feel. Understanding these differences helps professional detailers choose the right pad for faster correction, cleaner finishing, and more consistent results.

For professional detailers, choosing between a 15mm and 21mm polisher is not about which machine is better, it is about which machine matches the job. The Barjack 15mm delivers control, balance, and versatility for curves, tighter panels, and refined finishing, while the Barjack 21mm brings serious correction speed and coverage to large, open surfaces. Here is how to choose the right long-throw DA for your workflow.